Notebookcheck

AMD Radeon HD 7640G + HD 7670M Dual Graphics

The AMD Radeon HD 7640G + HD 7670M Dual Graphics is the combination of a integrated AMD Radeon HD 7640G APU processor graphics card and a dedicated entry level AMD Radeon HD 7670M graphics card in CrossFire combination. It is called AMD Dual Graphics or asymmetric CrossFire and uses AFR (Alternate Frame Rendering) to render different frames on the two graphic cores. Therefore the combination also suffers from micro stuttering (different spaces between two images lead to stuttering altough the framerate is high enough for fluent gaming with only one GPU).

The performance of the Dual Graphics solution depends greatly on the driver support for the used games. In some games the performance may even degrade by 10-15% compared to using only the APU graphics card. Therefore, due to the micro stuttering and performance problems, Dual Graphics may impose more problems than bring performance gains. Only in a best case scenario the performance is similar to the GeForce GT 635M.

The features like PureVideo HD (UVD3) or OpenCL support are similar to the two graphics cards.

As both graphics cards are rendering frames, the power consumption is clearly higher than using only one GPU.

ManufacturerAMD
Radeon HD 7600M Series
Radeon HD 7690M XT 480 @ 725 MHz128 Bit @ 3600 MHz
Radeon HD 7690M 480 @ 600 - 725 (Boost) MHz128 Bit @ 3600/1800 MHz
Radeon HD 7660G + HD 7670M Dual Graphics 862 @ 685 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7670M Dual Graphics 736 @ 655 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7520G + HD 7670M Dual Graphics 736 @ 655 / 600 MHz128 Bit @ 1800 MHz
Radeon HD 7670M 480 @ 600 MHz128 Bit @ 1800 MHz
Radeon HD 7650M 480 @ 450 - 550 (Boost) MHz128 Bit @ 1800 MHz
Radeon HD 7630M 480 @ 450 MHz128 Bit @ 1800 MHz
Radeon HD 7640G + HD 7610M Dual Graphics 656 @ 655 / 450 MHz128 Bit @ 1800 MHz
Radeon HD 7610M 400 @ 450 MHz128 Bit @ 1600 MHz
ArchitectureTerascale 3
Pipelines736 - unified
Core Speed *655 / 600 MHz
Memory Speed *1800 MHz
Memory Bus Width128 Bit
Shared Memoryyes
DirectXDirectX 11, Shader 5.0
technology32/40 nm
Notebook Sizemedium sized
Date of Announcement15.05.2012
* The specified clock rates are only guidelines for the manufacturer and can be altered by them.

Benchmarks

3DMark (2013) - Fire Strike Standard Graphics 1920x1080
0%
100%
min: 623      avg: 666.3 (3%)     median: 623 (3%)     max: 753 Points
3DMark (2013) - Fire Strike Standard Score 1920x1080
0%
100%
min: 529      avg: 570.7 (4%)     median: 529 (4%)     max: 654 Points
3DMark (2013) - Cloud Gate Standard Graphics 1280x720
0%
100%
min: 5715      avg: 6137.7 (5%)     median: 5715 (4%)     max: 6983 Points
3DMark (2013) - Cloud Gate Standard Score 1280x720
0%
100%
min: 3566      avg: 3709 (13%)     median: 3566 (13%)     max: 3995 Points
3DMark (2013) - Ice Storm Standard Graphics 1280x720
0%
100%
min: 37273      avg: 48281.7 (6%)     median: 53786 (7%)     max: 53786 Points
Unigine Heaven 3.0 - OpenGL, Normal Tessellation, High Shaders 1920x1080
0%
100%
min: 10.6      avg: 10.6 (10%)     median: 10.6 (10%)     max: 10.6 fps
Unigine Heaven 3.0 - DX 11, Normal Tessellation, High Shaders 1920x1080
0%
100%
min: 13.9      avg: 13.9 (7%)     median: 13.9 (7%)     max: 13.9 fps
3DMark 11 - Performance GPU 1280x720
0%
100%
min: 1629      avg: 1671 (7%)     median: 1649 (7%)     max: 1757 points
3DMark 11 - Performance 1280x720
0%
100%
min: 1585      avg: 1626.3 (9%)     median: 1628 (9%)     max: 1664 points
3DMark Vantage - P GPU no PhysX 1280x1024
0%
100%
min: 4554      avg: 4811.5 (9%)     median: 4887 (10%)     max: 4918 Points
3DMark Vantage - P Result no PhysX 1280x1024
0%
100%
min: 4696      avg: 4969.8 (10%)     median: 5049 (11%)     max: 5085 Points
3DMark 06
0%
100%
min: 7090      avg: 8121.5 (21%)     median: 8451.5 (22%)     max: 8493 Points
3DMark 05 - Standard 1024x768
0%
100%
min: 10288      avg: 10402.7 (28%)     median: 10288 (28%)     max: 10632 Points
Cinebench R11.5 - OpenGL 64Bit
0%
100%
min: 17.26      avg: 24.4 (20%)     median: 24.4 (20%)     max: 31.57 Points
Cinebench R10 - Shading 32Bit
0%
100%
min: 4566      avg: 4589 (31%)     median: 4589 (31%)     max: 4612 Points
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailled information on the benchmark results, click on the fps number.

Crysis 3

Crysis 3

2013
low 1024x768
28.7  fps      Compare
med. 1366x768
15  fps      Compare
high 1366x768
10.5  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Dead Space 3
low 1024x768
99.2  fps      Compare
med. 1366x768
45.9  fps      Compare
high 1366x768
35.9  fps      Compare
» With all tested laptops playable in detail settings high.
Hitman: Absolution
low 1024x768
19.9  fps      Compare
med. 1366x768
18.7  fps      Compare
high 1366x768
13.4  fps      Compare
» The benchmarks indicate that the game is not playable in the tested settings.
Fifa 13

Fifa 13

2012
low 1024x768
130.8 133 ~ 132 fps      Compare
med. 1366x768
100.9 108 ~ 104 fps      Compare
high 1366x768
99.4 103 ~ 101 fps      Compare
ultra 1920x1080
65 71 ~ 68 fps      Compare
» With all tested laptops playable in detail settings ultra.
Dirt Showdown
low 1024x768
34.2 37.4 ~ 36 fps      Compare
med. 1366x768
26.7  fps      Compare
high 1366x768
25.5  fps      Compare
» With most tested laptops playable in detail settings low.
Diablo III
low 1024x768
78.5 96 98 ~ 91 fps      Compare
med. 1366x768
74 74 ~ 74 fps      Compare
high 1366x768
65.4 70 ~ 68 fps      Compare
ultra 1920x1080
43.3 48 ~ 46 fps      Compare
» With all tested laptops playable in detail settings ultra.
Anno 2070

Anno 2070

2011
low 1024x768
69 74.9 90 ~ 78 fps      Compare
med. 1366x768
28 31.8 ~ 30 fps      Compare
high 1366x768
19 20.6 ~ 20 fps      Compare
» With all tested laptops playable in detail settings low.
The Elder Scrolls V: Skyrim
low 1280x720
35.1  fps      Compare
med. 1366x768
30.8  fps      Compare
high 1366x768
25.1  fps      Compare
» With all tested laptops playable in detail settings low.
F1 2011

F1 2011

2011
low 800x600
59  fps      Compare